fs/nfsd/nfsxdr.c

9 #include "xdr.h"
29  * @xdr: XDR stream
37 svcxdr_encode_stat(struct xdr_stream *xdr, __be32 status)
41 	p = xdr_reserve_space(xdr, sizeof(status));
51  * @xdr: XDR stream positioned at an encoded NFSv2 FH
59 svcxdr_decode_fhandle(struct xdr_stream *xdr, struct svc_fh *fhp)
63 	p = xdr_inline_decode(xdr, NFS_FHSIZE);
74 svcxdr_encode_fhandle(struct xdr_stream *xdr, const struct svc_fh *fhp)
78 	p = xdr_reserve_space(xdr, NFS_FHSIZE);
98 svcxdr_decode_filename(struct xdr_stream *xdr, char **name, unsigned int *len)
104 	if (xdr_stream_decode_u32(xdr, &size) < 0)
108 	p = xdr_inline_decode(xdr, size);
122 svcxdr_decode_diropargs(struct xdr_stream *xdr, struct svc_fh *fhp,
125 	return svcxdr_decode_fhandle(xdr, fhp) &&
126 		svcxdr_decode_filename(xdr, name, len);
130 svcxdr_decode_sattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
136 	p = xdr_inline_decode(xdr, XDR_UNIT * 8);
205  * @xdr: XDR stream
214 svcxdr_encode_fattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
224 	p = xdr_reserve_space(xdr, XDR_UNIT * 17);
276 nfssvc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
280 	return svcxdr_decode_fhandle(xdr, &args->fh);
284 nfssvc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
288 	return svcxdr_decode_fhandle(xdr, &args->fh) &&
289 		svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
293 nfssvc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
297 	return svcxdr_decode_diropargs(xdr, &args->fh, &args->name, &args->len);
301 nfssvc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
306 	if (!svcxdr_decode_fhandle(xdr, &args->fh))
308 	if (xdr_stream_decode_u32(xdr, &args->offset) < 0)
310 	if (xdr_stream_decode_u32(xdr, &args->count) < 0)
313 	if (xdr_stream_decode_u32(xdr, &totalcount) < 0)
320 nfssvc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
325 	if (!svcxdr_decode_fhandle(xdr, &args->fh))
328 	if (xdr_stream_decode_u32(xdr, &beginoffset) < 0)
330 	if (xdr_stream_decode_u32(xdr, &args->offset) < 0)
333 	if (xdr_stream_decode_u32(xdr, &totalcount) < 0)
337 	if (xdr_stream_decode_u32(xdr, &args->len) < 0)
342 	return xdr_stream_subsegment(xdr, &args->payload, args->len);
346 nfssvc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
350 	return svcxdr_decode_diropargs(xdr, &args->fh,
352 		svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
356 nfssvc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
360 	return svcxdr_decode_diropargs(xdr, &args->ffh,
362 		svcxdr_decode_diropargs(xdr, &args->tfh,
367 nfssvc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
371 	return svcxdr_decode_fhandle(xdr, &args->ffh) &&
372 		svcxdr_decode_diropargs(xdr, &args->tfh,
377 nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
382 	if (!svcxdr_decode_diropargs(xdr, &args->ffh, &args->fname, &args->flen))
384 	if (xdr_stream_decode_u32(xdr, &args->tlen) < 0)
389 	args->first.iov_len = head->iov_len - xdr_stream_pos(xdr);
390 	args->first.iov_base = xdr_inline_decode(xdr, args->tlen);
393 	return svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
397 nfssvc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
401 	if (!svcxdr_decode_fhandle(xdr, &args->fh))
403 	if (xdr_stream_decode_u32(xdr, &args->cookie) < 0)
405 	if (xdr_stream_decode_u32(xdr, &args->count) < 0)
416 nfssvc_encode_statres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
420 	return svcxdr_encode_stat(xdr, resp->status);
424 nfssvc_encode_attrstatres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
428 	if (!svcxdr_encode_stat(xdr, resp->status))
432 		if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
441 nfssvc_encode_diropres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
445 	if (!svcxdr_encode_stat(xdr, resp->status))
449 		if (!svcxdr_encode_fhandle(xdr, &resp->fh))
451 		if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
460 nfssvc_encode_readlinkres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
465 	if (!svcxdr_encode_stat(xdr, resp->status))
469 		if (xdr_stream_encode_u32(xdr, resp->len) < 0)
471 		svcxdr_encode_opaque_pages(rqstp, xdr, &resp->page, 0,
482 nfssvc_encode_readres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
487 	if (!svcxdr_encode_stat(xdr, resp->status))
491 		if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
493 		if (xdr_stream_encode_u32(xdr, resp->count) < 0)
495 		svcxdr_encode_opaque_pages(rqstp, xdr, resp->pages,
507 nfssvc_encode_readdirres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
512 	if (!svcxdr_encode_stat(xdr, resp->status))
516 		svcxdr_encode_opaque_pages(rqstp, xdr, dirlist->pages, 0,
519 		if (xdr_stream_encode_item_absent(xdr) < 0)
521 		if (xdr_stream_encode_bool(xdr, resp->common.err == nfserr_eof) < 0)
530 nfssvc_encode_statfsres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
536 	if (!svcxdr_encode_stat(xdr, resp->status))
540 		p = xdr_reserve_space(xdr, XDR_UNIT * 5);
579 	struct xdr_stream *xdr = &resp->xdr;
581 	if (xdr_stream_encode_item_present(xdr) < 0)
584 	if (xdr_stream_encode_u32(xdr, (u32)ino) < 0)
587 	if (xdr_stream_encode_opaque(xdr, name, min(namlen, NFS2_MAXNAMLEN)) < 0)
591 	if (xdr_stream_encode_u32(xdr, ~0U) < 0)
611  *   - resp->xdr
630 	xdr_commit_encode(&resp->xdr);